I have an 22 inch BenQ LCD monitor, Model VW2245 and a Ricoh SP210 SU -USB Laser printer (900 watts). I have been observing a strange behaviour with my monitor. Whenever I switch on the printer the screen flickers on the monitor or the display switches off and on. The distance between the printer and LCD monitor is 10 inches approximately and both are placed on a wooden table.
The power connection is as follows.
From a single 6 Amps AC wall socket protected by a 10 Amps MCB, my 700 VA APC UPS is connected.
The UPS has 2 battery backup sockets and 2 Surge protection sockets(no battery backup for these surge protection sockets)
I connected the CPU power, monitor, speakers and my router to a power strip and the power strip is connected to one of the battery backup sockets in the UPS.
The printer is connected directly to the non battery backup surge protection socket in the UPS.
Apart from these nothing are connected to the UPS.
For this flickering problem, initially I suspected that the mains MCB might not be bearing the load of the printer and got it upgraded to 10 Amps (initially had a 6 Amps MCB). I got the mains AC wall socket also double checked for any loose contacts but everything seems to be fine from an electrical view point.
I heard about the electrical noise interference that causes to the monitors but not sure if that would also apply to LCD monitors. Is this the cause? If yes does it damage the monitor?
The flickering only happens once when the printer is switched on and does not repeat again until the printer is switched off and on again.
Clueless as if this is the due to the interference caused by the printer or the electrical voltage load or the UPS is the problem.
Can anybody guide me please.
The power connection is as follows.
From a single 6 Amps AC wall socket protected by a 10 Amps MCB, my 700 VA APC UPS is connected.
The UPS has 2 battery backup sockets and 2 Surge protection sockets(no battery backup for these surge protection sockets)
I connected the CPU power, monitor, speakers and my router to a power strip and the power strip is connected to one of the battery backup sockets in the UPS.
The printer is connected directly to the non battery backup surge protection socket in the UPS.
Apart from these nothing are connected to the UPS.
For this flickering problem, initially I suspected that the mains MCB might not be bearing the load of the printer and got it upgraded to 10 Amps (initially had a 6 Amps MCB). I got the mains AC wall socket also double checked for any loose contacts but everything seems to be fine from an electrical view point.
I heard about the electrical noise interference that causes to the monitors but not sure if that would also apply to LCD monitors. Is this the cause? If yes does it damage the monitor?
The flickering only happens once when the printer is switched on and does not repeat again until the printer is switched off and on again.
Clueless as if this is the due to the interference caused by the printer or the electrical voltage load or the UPS is the problem.
Can anybody guide me please.